We are playing whack a mole again. The original claim was that it was not possible to know the location/timing of the motorcade as it made its way to Dealey Plaza. Then it was deemed a lie to suggest that there was reporting of the progress of the motorcade (as you might expect so that those responsible for security had a head's up as it approached their location). The witness testimony indicates that the motorcade was being reported over the police radio and reports of its progress could be heard in Dealey Plaza as it approached. And, of course, the motorcade was the top news story that day in Dallas and was widely covered on broadcast TV and radio. In addition, the crowd and motorcade noise were audible as the motorcade progressed through the city. You could hear it approaching. There was nothing impossible about anticipating the arrival of the motorcade in Dealey Plaza or knowing that it would be a few minutes behind schedule (as most such events are). And even if this baseless claim had any validity (i.e. there would be no way for Oswald to know the exact time the motorcade would pass the building) that does nothing to preclude him from still being the assassin. Instead down the rabbit hole we go.